What's everyone using on cut threads on rigid conduit?
- Thread starter Todd0x1
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masterinbama
Senior Member
- Location
- Huntsville Alabama
Critical applications I spray with brake cleaner then cold galvanized or copper.
Brake cleaner is cheap and removes the oil.
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Brake cleaner is cheap and removes the oil.
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- Location
- Illinois
- Occupation
- retired electrician
We use Crouse Hinds STL ... much cheaper than Kopr Shield and not near as messy. Not sure I would approve cold galv as an " electrically conductive, corrosion-resistant compound"
- Location
- Bremerton, Washington
- Occupation
- Master Electrician
I like spray with electra clean, then cold gav and then a bit of Kopper Shield or Penatrox E. Brake cleaner is a great tip
Kopr Shield gets home before you do, the Penatrox E comes in a squeeze bottle/
Not familar with STL...but if Don recommends it, then it has to be good.
Kopr Shield gets home before you do, the Penatrox E comes in a squeeze bottle/
Not familar with STL...but if Don recommends it, then it has to be good.
masterinbama
Senior Member
- Location
- Huntsville Alabama
Brake cleaner is basically the same chemically as lectra clean. But much cheaper.
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Dsg319
Senior Member
- Location
- West Virginia
- Occupation
- Wv Master “lectrician”
From at least what I’ve always seen and used within our company, we always just wipe clean oil and a good coat of spray gal, BUT we never depend on the raceway as an EGC as we always have one pulled with the circuit. If we was to use the raceway for an EGC I’d take much more precaution.
- Location
- Illinois
- Occupation
- retired electrician
It is a spec from before I got in the trade at a plastics plant I did a lot of work at. It is a lithium based product and is not near as messy as the copper products....and a lot cheaper.
STL and HTL Thread Lubricant
Crouse-Hinds series STL and HTL thread lubricants inhibit corrosion on any metal-to-metal joint of electrical equipment. The lubricant can be used between any screw thread and its tapped opening, on any rotating shaft – threaded or plain.
You brought up something I failed to mention here, the conduit is not used as EGC it has one installed.
- Location
- Illinois
- Occupation
- retired electrician
it doesn't matter if you have pulled a wire type EGC in the metal raceway.
The installation rules do not change and it still has to be installed in a manner that would not impede its use as an EGC.
Thanks for clearing that up.
Dsg319
Senior Member
- Location
- West Virginia
- Occupation
- Wv Master “lectrician”
This is all I’ve ever used , I’ve seen the copper thread lubricant in a few instances and is probably better to use honestly.
Stl8 doesn’t hinder continuity but neither is it conductive, mostly helps lubricate and helps with moistures. What other measures do you think I should consider taking moving forward? (Honest question?)
I wonder if an oxide anhibiter would help
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Dsg319
Senior Member
- Location
- West Virginia
- Occupation
- Wv Master “lectrician”
I see you also use STL. I’ve only ever used STL8, is there other STL that do actually do help with conductivity and continuity?
- Location
- Illinois
- Occupation
- retired electrician
It does stop a bit short of saying that it is conductive. The spec sheet says:
"Maintains grounding continuity; should not be used on exposed current-carrying parts"
The high temperature version, HTL, says
"HTL is a high temperature, anti-seize, conductive thread lubricant" but it also says:
"Maintains grounding continuity; should not be used on exposed current carrying parts"
The last item on their spread sheet says:
"Complies with NEC 2017, Article 300.6"
Based on that, I can only assume that both STL and HTL are conductive as 300.6 says:
"... approved electrically conductive, corrosion-resistant compound "
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